Akai X-165D Service Manual

a)
b)
Cc)
a)
b)
c)
d)
14
_
LINE
OUTPUT
LEVEL
ADJUSTMENT
Connect
a
high
sensitivity
V.T.V.M.
to
the
Line
Output
Jack.
Playback
a
250Hz
pre-recorded
test
tape
at
7-
1/2
ips.
Adjust VR-201 (LEFT and RIGHT CH. semi-fixed
resistor
20
KQQB)
of
the
pre-amplifier
(CD-513)
so
that the Line Output Voltage is 1.228 V (+4 dBm).
RECORDING
LEVEL
ADJUSTMENT
Recording
level
adjustment
should
be
made
only
after
“Head
Adjustment”
and
“Line
Output
Level
Adjustment”
has
been
made.
As
shown
in
Fig.3,
connect
an
Audio
Signal
Generator
and
Attenuator
to
the
Line
Input.
Con-
nect
a
high
sensitivity
V.T.V.M.
to
the
Line
Output.
Line Line
Input Output |
Fig. 3
Set
Equalizer
Switch
and
Tape
Speed
Selector
to
7-1/2
ips.
Load
a
blank
test
tape
(Fuji
FYS-100
or
Scotch
No.
150).
Supply
a
1,000
Hz
signal
from
the
audio
signal
generator
to
the
Line
Input,
and
adjust
each
of
the
Volume
Controls
so
that
each
of
the
Line
Output
voltages
is
1.228
V
(+4
dBm).
Record
the
signal
on
the
tape
and
check
playback
to
see
whether
Line
Output
Voltage
is
1.228
V
(+4
dBm).
If
Line
Output
Voltage
fails
to
register
1.228
V
(+4
dBm),
while
repeating
recording
and
playback,
adjust
semi-fixed
resistors
VR-101
(LEFT
and
RIGHT
CH,
2
KQ-B)
until
1.228
V
(+4
dBm)
is
obtained
both
on
recording
and
playback.

Akai X-165D Specifications

General

Brand	Akai
Model	X-165D
Category	Tape Deck
Language	English